Success rates may be misleading if they are based on a small number. We omit graphed data if there are less than 20 transfers in a segment. You can find these outcomes expressed as a fraction in the table following the graphed data. The bottom of the fraction indicates the number of transfers and the top shows the number of live births.

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Swipe table to view data.

Fresh Embryos

< 35

36-37

38-40

41-42

Donor

Live Birth Rate

1 / 2

1 / 4

1 / 3

0.0

0.0

Average Embryos Transferred

1.0

1.3

1.7

0.0

0.0

Number of Transfers

2

4

3

0

0

Thawed Embryos

< 35

36-37

38-40

41-42

Donor

Live Birth Rate

6 / 18

24.1

0 / 7

0 / 4

0.0

Average Embryos Transferred

1.2

1.2

1.1

1.0

0.0

Number of Transfers

18

29

7

4

0

Banked Embryos / Oocytes

< 35

36-37

38-40

41-42

Donor

Number of Cycles

20

30

11

0

N/A

Based on 2015 data as reported to the CDC. This data has not been verified. A message from the CDC, "A Comparison of clinic success rates may not be meaningful because patient medical characteristics and treatment approaches vary from clinic to clinic."